All-optical information processing scheme for polarization multiplexing system

Abstract

The invention discloses an all-optical information processing scheme for a polarization multiplexing system. An all-optical information processor has a nonlinear polarization diversity loop structure106, and mainly comprises a polarization control unit 107, an optical circulator 104, a polarization beam splitter 103, a Faraday polarization rotator 102, a nonlinear medium 101 and an adjustable filter 105. Under the condition of different external optical paths, the scheme can be used in the polarization multiplexing system to realize the synchronous regeneration or wavelength conversion in two orthogonal polarization channels and other functions.

Description

technical field [0001] The invention relates to the fields of high-speed optical fiber communication, nonlinear optical fiber optics, all-optical information processing and the like, especially the all-optical information processing technology in high-speed polarization multiplexing systems. Background technique [0002] The sharp increase in people's demand for communication bandwidth has brought new challenges to existing optical communication networks. The search for an optical transmission mechanism with ultra-high speed, large capacity, long distance and high spectral efficiency has become one of the hotspots in optical communication research. At the same time, all-optical information processing, such as wavelength conversion, all-optical regeneration, code conversion, signal amplification, etc., can overcome the "electronic bottleneck" caused by traditional information processing based on the electrical domain, and is one of the key technologies for future optical netw...

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Problems solved by technology

[0004] In order to get rid of the rate limit brought by the information processing in the electrical domain and further increase the system rate, the research on the all-optical information processing technology around the polarization multiplexing system has recently begun to be carried out, but it mainly focuses on the wavelength conversion, while the all-optical information regeneration, There are few reports on technical solutions related to modulation format conversion. The main reason is that there are many challenges to two channels (and the same wavelength) at the same time, including signal crosstalk, nonlinear interaction, and how to use a single functional module to realize two channels at the same time. The information processing function of each channel, etc.

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